A curiosity indeed. – Certainly not the usual haunt of a CMB ship, but in passing she was fixed (by me working on behalf of Compagnie Maritime Belge) on the 10th September 1976 to Kuwait Steamship Copany, for a timecharter trip starting at Bremen and via the UK to thence out to the then “Persian Gulf”, at the princely rate of US Dollars 4,825 per day plus USD1,500 overtime; so it is possible she was on that timecharter and it might explain her unusal visit to the Clyde. - I wonder if you have a note of the month?
The MONTSALVA was the last of the four ships of this serie of 4, but it differed from the others by its hatch cover closing system which had been devised by a former employee of Mac Gregor who impletmented his own pattent. I was on board during the sea trial and a strong team of welders had still to fix the hatch covers. The watertight test should have been carried out with an umbrella. Preparing the hatch cover for sea was a difficult operation also.